Ma'am, I think we found the source of our problem.

So we have no idea what caused this?

Just give me a second. I'm sure I'm gonna be able to figure it out.

Captain, I think we found the problem!

Among all causes seek the main cause.

For debbugging the same hole, you want to have a cause that assumes and changes as little as possible but still produces the effect, and that's precisely what delta debugging gets you starting with the general cause the entire input reproduces an actual cause namely a subset of the input in which everything is relevant for producing the effect.

Priority number one Finding out what caused this.

They are judge and defendant, they are professional politicians.

To find out if our out got spilled along with every other damn thing.

What we're going to explore today is how to simplify failures that is, finding what is relevant for the failure and what is not and how to do this automatically that is, automatically finding out the cause of the failure.

We can have errors that are not causes and causes that are not errors.

Too many factors. It's not that!

In particular Mozilla should not crash on any input.

It changed. Why?

At the end, there should be only one hypothesis, there should be only one theory, and there should be only one diagnosis on how the failure came to be.

We must find out the cause and get rid of it.

Any thought yet on a cause?

This is where we stand today.

Yeah. Phlox doesn't know what's wrong with us yet.

We must find out the cause and get rid of it.

Cause?

It didn't happen by magic !

And one of their projects was to see what makes meetings boring, and to try and do something about it.

There is how to track bugs, how to organize the debugging process, how to make sure that bugs don't reappear, and how to find for a project where and why bugs occur.

The machine was too complicated for us to find out the cause of the trouble.

That depends on what's causing it.

So let's do a little quiz.

Because people like myself, when we walk into a playroom, we recognize a child as having autism.

Better to see predators in tall grass, my dear.

You need to rest. No. Booth, the key to catching kovac is inside that lab.

Why would there be security issues related to that?

What's the cause?

Why?

What did he die of?

Disabled by what?

How?

And I don't think Sunday football watching and general laziness is the cause.

Our work's always had a focus on health. That's the key.

large amounts of uncertainty. So, uncertainty comes in many forms and for many different reasons.

Clear up the cause.

The actual cause?

You drink it in peril of your life.

There are lots of ways we have of avoiding and numbing and bypassing pain, but the point of all of this is to deal with the cause of the problem.

It's what caused the explosion I want you to see.

I think we found the problem.